Often asked: How Tyre Size Is Measured?

What do TYRE numbers mean?

The first number is the width of the tyre in millimetres. Therefore, this radial tyre has a width of 205mm. The ’65’ confirms the height shown as a percentage of the full tyre width. The letter ‘R’ depicts the variety of tyre. The number ’16’ is the wheel rim diameter stated in inches.

What size is a 32 inch TYRE?

Diameter Comparison of Light Truck Tire Sizes

Approx. Tire Diameter (in Inches ) P-Metric and European Metric LT-Metric
75-series and 70-series 75-series and 70-series
32 LT265/75R16
31-1/2 265/70R17 LT265/75R16

What is 155 80 r13 TYRE size?

155. This number indicates that your tire has a width of 155 millimeters. 80. This number means that your tire has an aspect ratio of 80%. In other words, your tire’s sidewall height (from the edge of the rim to the tire’s tread) is 80% of the width.

How do you read a TYRE code?

When it comes to how to read tyre size, the first five digits of the code are the ones to concentrate on. The first three digits belong together and indicate the width of the tyre (in millimetres). The two digits following the first slash are what is known as the aspect ratio.

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Can I change TYRE size?

It’s possible to change the size of your tires without actually changing the diameter. One example is if you want larger rims – you can buy tires that compensate for the larger rims by reducing the “height” of the outer tire.

How do I know my tire size in inches?

Common Tire Size Parts The First Number. The number 205 represents the section width of the tire, in millimeters. The Second Number. The number 75 refers to the sidewall aspect ratio. The Third Number. The last number, 15 in our example, represents the diameter, in inches, of the wheel on which the tire is mounted.

What is the most common TYRE size?

Popular tyre sizes 225/45 R17. 195/65 R15. 215/55 R16. 175/65 R15. 185/65 R15. 195/60 R15. 275/40 R20. 165/70 R14.

What’s a 33 tire size?

A standard sized tire will be displayed in inches. A tire that reads 33 x 12.5 R15, is 33 -inches in diameter (or tall), 12.5-inches wide, and will fit a 15-inch wheel. The door jam of your vehicle will also indicate what size tires the manufacturer recommends.

What does the R mean in TYRE size?

R means that the tyre has radial ply construction, meaning the way in which it has been constructed. Most car tyres are constructed this way so you will rarely find a car tyre without an R. 4. Rim. 15 indicates the diameter of the wheel rim in inches.

How do TYRE sizes work?

The two-digit number after the slash mark in a tire size is the aspect ratio. For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire’s width. The bigger the aspect ratio, the bigger the tire’s sidewall will be.

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What does the R stand for in TYRE size?

R indicates the construction used within the tires casing. R stands for radial construction. B means belted bias and D stands for diagonal bias construction. 16 The last dimension listed in the size is the diameter of the wheel rim, which is most often measured in inches.

How do you read a TYRE year?

The last four digits of this code tell you when your tire was manufactured. The first two numbers indicate what week of the year it was made (out of 52 weeks per year ), and the second two numbers represent the year. For example, 5200 would reveal that a tire was manufactured during the 52nd week of the year 2000.

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